Improvement in extension-chandeliers



L, BRAUER. Extension-Chandelier.. No. essz.

Patented sept. 16,1879.

N.FETF.RS. PHOTO-LITHOGHAPMER, WASHINGTQN. o 24 Afrom bottom to top.

UNITED STATES PATENT VO EflllcF.

LOUIS BRAUER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOB. OF ON E--HALF HIS RIGHT TO CARL SAAKE, OF SAME PLAGE.

IMPROVEMENT IN EXTENSION-CHANDELIERS.

Specification forming` part of Letters Patent No. 219,682, dated September 16, 1879; application led May Y lier or slide-light embodying my invention.

My invention consists in providing the joints of chandelier extensionpipe with spiral tapering fibrous packing inclosed in an internallytapering nut, said packing being provided with a washer to prevent turning on the pipe, and clamped by a compressing and adjust-ing colY Y lar.

Referring to the drawing, A and B represent the xed and sliding pipes, respectively, of an extension-chandelier or slide-light. At the lower end of the pipe A is a casing or enlargement, O, between which and the pipe B is packing D, which consists of fibrous material wound around said pipe B, and closes the joint between the pipes A and B. 'Ihispacking is wound spiral] y about said pipe Bin regular coils, and decreases in thickness regularly The casing or enlargement U, which incloses it, has a corresponding internal upward taper, so that there is a certain wedge-like action between the engaging faces of said casing and packing. This may be increased by the compressing action of collar E against the base of said packing. Noth`Ar l, ing is interposed except washer F. I employ no spring in any part of my device.

E represents a screw-collar, which eucircles the pipe B, and engages with threads on the lower end of the casing G, and is adapted to bear against a metallic or other hard washer, F, interposed between the packing D and the collar E.

The operation is as follows: The sliding pipe B is raised or lowered the proper extent relatively to the desired height of the burner or lixture attached to the pipe. The packing D in no wise interferes with the free movements of the sliding pipe, but closes the joint in the casing G, whereby gas is prevented leaking thereat.

, Should the friction of the packing be insufficient to sustain the pipe B and connected parts, the collar E is properly turned so as to compress the packing, the expansion whereofl whereof is evident.

Should the friction of the packing be too great, the collar is turned or lowered, so as to remove a proper degree of pressure on the packing, whereby the power of the packing is decreased, and the sliding pipe Amay be moved with greater freedom. p

The fibrous packing may be readily replaced when worn and lubricated when desired, and, while the adjustment ot' the compression is readily 4obtained by operation of the collar E, twisting or turning ofthe packingby such. operation is prevented by the washer F, which, as has been stated, is interposed between the packing and collar.

I am aware that extension-chandeliers or drop-li ghts have heretofore been constructed in sections, one section being provided with a casin or enlargement, and the other with fibrous packing and a compressingfnut, the packing being within the casing when the two sections are joined together.

Drophghts thus constructed are similar in general airan gement to mine, but lack the tapering construction of the packingand of the interior of the casing.

The advantages of this tapering'construcspecification.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In combination with pipes A and B and tapering shell C, the tapering fibrous packing D, wound spirally around pipe B within shell C, and the adjustingcollar, E, operating directly against the base of said tapering packing.

2. In combination with pipes A and B and tapering shell O, the tapering flexible packing D, compressing-collar E, and Washer F, substantially as set forth.

\ LOUIS BBAUER.

Witnesses:

J oHN A. WreDERsHEnvr, A. P. GRANT.

increases the friction on the pipe, the eifect tion have been already pointed out in this4 

